[update] 诊断优化，返回具体错误描述

signal-optimize-service/src/main/java/net/wanji/opt/service/impl/DiagnoServiceImpl.java

@@ -308,7 +308,12 @@ public class DiagnoServiceImpl implements DiagnoService {
         CrossInfoPO crossInfoPO = crossInfoMapper.selectById(crossId);
         optEffectVO.setCrossName(crossInfoPO.getName());
         List<CrossSchemeOptLogPO> maxList = crossSchemeOptLogMapper.selectMaxByCrossId(crossId);
-        CrossSchemeOptLogPO crossSchemeOptLogPO = maxList.get(0);
+        CrossSchemeOptLogPO crossSchemeOptLogPO = null;
+        try {
+            crossSchemeOptLogPO = maxList.get(0);
+        } catch (IndexOutOfBoundsException e) {
+            throw new RuntimeException("优化日志数据库中无此路口记录");
+        }
         String dataExtend = crossSchemeOptLogPO.getDataExtend();
         OptDataExtend optDataExtend = gson.fromJson(dataExtend, OptDataExtend.class);
         optEffectVO.setSceneName(optDataExtend.getSceneName());